This book contains the Proceedings of the 21st IFIP TC-11 International Information Security Conference (IFIP/SEC 2006) on "Security and Privacy in Dynamic Environments". The papers presented here place a special emphasis on Privacy and Privacy Enhancing Technologies. Further topics addressed include security in mobile and ad hoc networks, access control for dynamic environments, new forms of attacks, security awareness, intrusion detection, and network forensics.

These proceedings contain the papers of IFIP/SEC 2010. It was a special honour and privilege to chair the Program Committee and prepare the proceedings for this conf- ence, which is the 25th in a series of well-established international conferences on security and privacy organized annually by Technical Committee 11 (TC-11) of IFIP. Moreover, in 2010 it is part of the IFIP World Computer Congress 2010 celebrating both the Golden Jubilee of IFIP (founded in 1960) and the Silver Jubilee of the SEC conference in the exciting city of Brisbane, Australia, during September 20–23. The call for papers went out with the challenging motto of “Security & Privacy Silver Linings in the Cloud” building a bridge between the long standing issues of security and privacy and the most recent developments in information and commu- cation technology. It attracted 102 submissions. All of them were evaluated on the basis of their significance, novelty, and technical quality by at least five member of the Program Committee. The Program Committee meeting was held electronically over a period of a week. Of the papers submitted, 25 were selected for presentation at the conference; the acceptance rate was therefore as low as 24. 5% making SEC 2010 a highly competitive forum. One of those 25 submissions could unfortunately not be included in the proceedings, as none of its authors registered in time to present the paper at the conference.

This book constitutes the refereed proceedings of the 26th IFIP TC 11 International Information Security Conference, SEC 2011, held in Lucerne, Switzerland, in June 2011. The 24 revised full papers presented together with a keynote talk were carefully reviewed and selected from 100 submissions. The papers are organized in topical sections on malware, information flow and DoS attacks, authentication, network security and security protocols, software security, policy compliance and obligations, privacy attacks and privacy-enhancing technologies, risk analysis and security metrics, and intrusion detection.

This book constitutes the refereed proceedings of the Third International Conference on Security and Privacy in New Computing Environments, SPNCE 2020, held in August 2020. Due to COVID-19 pandemic the conference was held virtually. The 31 full papers were selected from 63 submissions and are grouped into topics on network security; system security; machine learning; authentication and access control; cloud security; cryptography; applied cryptography.

st The world of the 21 century is, more than ever, global and impersonal. Criminal and terrorist threats, both physical and on the Internet, increase by the day. The demand for better methods of identification and access control is growing, not only in companies and organisations but also in the world at large. At the same time, such security measures have to be balanced with means for protecting the privacy of users. Identity management is put under pressure, due to the growing number of frauds who want to hide their true identity. This challenges the information security research community to focus on interdisciplinary and holistic approaches while retaining the benefits of previous research efforts. In this context, the IFIP Working Group 11.6 on Identity Management has been founded in August 2006. The intention of the Working Group is to offer a broad forum for the exchange of knowledge and for the tracking and discussion of issues and new developments. In this, we take an interdisciplinary approach. Scientists as well as practitioners, from government and business, who are involved in the field of identity management are welcome to participate. The IDMAN 2007 Conference on Policies and Research in Identity Management was the very first conference organized by this Working Group. We aim to organize conferences bi-annually. The IDMAN 2007 Conference has been centered around the theme of National Identity Management or, in other words, identity management in the public sector.

This book constitutes the refereed proceedings of the Third International Conference on Trust and Privacy in Digital Business, TrustBus 2006, held in conjunction with DEXA 2006. The book presents 24 carefully reviewed, revised full papers, organized in topical sections on privacy and identity management, security and risk management, security requirements and development, privacy enhancing technologies and privacy management, access control models, trust and reputation, security protocols and more.

This book contains the proceedings of the 5th International Conference on Trust, Privacy and Security in Digital Business (TrustBus 2008), held in Turin, Italy on 4–5 September 2008. Previous events in the TrustBus series were held in Zaragoza, Spain (2004), Copenhagen, Denmark (2005), Krakow, Poland (2006), and Regensburg, Germany (2007). TrustBus 2008 brought together academic researchers and industrial developers to discuss the state of the art in technology for establishing trust, privacy and security in digital business. We thank the attendees for coming to Turin to parti- pate and debate upon the latest advances in this area. The conference program included one keynote presentation and six technical paper sessions. The keynote speech was delivered by Andreas Pfitzmann from the Technical University of Dresden, Germany, on the topic of “Biometrics – How to Put to Use and How Not at All”. The reviewed paper sessions covered a broad range of topics, - cluding trust and reputation systems, security policies and identity management, p- vacy, intrusion detection and authentication, authorization and access control. Each of the submitted papers was assigned to five referees for review. The program committee ultimately accepted 18 papers for inclusion in the proceedings.

This book brings together a number of papers that represent seminal contributions underlying mobile and wireless network security and privacy. It provides a foundation for implementation and standardization as well as further research. The diverse topics and protocols described in this book give the reader a good idea of the current state-of-the-art technologies in mobile and wireless network security and privacy.

This book constitutes the refereed post-conference proceedings of the 6th European Workshop on Public Key Services, Applications and Infrastructures, EuroPKI 2009, held in Pisa, Italy, in September 2009. The 18 revised full papers presented together with an invited speech were carefully reviewed and selected from 40 submissions. The papers are organized in topical sections on certificate less encryption, certificates and revocation, cryptographic protocols, PKI in practice, encryption and auctions, reputation and user aspects, and digital signatures.